Inside Earth:
Chapter 3: Volcanoes
Section 3: Volcanic Landforms
Vocabulary:
Lava Plateaus: layers of lava form high plateaus
Caldera: large hole at the top of a volcano formed when the roof of a
volcano’s magma chamber collapses
Volcanic neck: a deposit of hardened magma in a volcano’s pipe
dike: slab of volcanic rock formed when magma forces itself across rock
layers
batholiths: a mass of rock formed when a large body of magma cooled
inside the crust
How they form?
Sheild
Cindercone
Composite or
Strato
(made of more
than one or
layers)
Large, sloping mountain that
forms from thin, flowing
lava that cools
From cinders that erupt from
the volcano and land close to
the vent to form the
mountain
Lava flows that alternate
with cinder and ash
explosions- the alternating
layers form a cone-shaped
mountain
Type of eruption and
lava?
Quiet eruption;
thin lava that flows
easily
Explosive eruption;
Physical
Description?
Gentle slope; wide
Steep; cone-shaped;
smallest volcanoes
thick lava
Quiet and explosive
eruptions;
thin lava that flows
easily and thick lava
(alternates)
Tall; pointy; conelike
S
 Rock and other materials formed from lava create a
variety of landforms including:
o shield volcanoes
o composite volcanoes
o cinder cone volcanoes
o lava plateaus.
 Features formed by magma include:
o Volcanic necks
o Dikes
o Sills
o Batholiths
o Dome mountains